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Finding the Fourth Proportional to 220,275.71, 330,523.32 and 87,251.84

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Solution

The fourth proportional to 220,275.71, 330,523.32 and 87,251.84 is: 130,921.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,275.71 : 330,523.32 = 87,251.84 : x
  2. Step 2: Convert to fraction form
    220,275.71/330,523.32 = 87,251.84/x
  3. Step 3: Cross multiply
    220,275.71x = 330,523.32 × 87,251.84
  4. Step 4: Simplify right side
    220,275.71x = 28,838,767,832.91
  5. Step 5: Solve for x
    x = 28,838,767,832.91/220,275.71
  6. Step 6: Final answer
    x = 130,921.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.